Liquid fuel burning stove



Nav. 10,Y 1942. c. A. MARTIN 2,301,183

LI'QUID FUEL BURNING sTovE FiledrJuly 24. 1941 Patented Nov. l0,` 1942UNITED sTATEs PATENT OFFICE LIQUID FUEL BURNING srovE chinees. Marcin,

Tupelo, Miss., assignor of onehalt to RobertNelsonFreeman, Tupelo, Miss.Application July 24, 1911, Serial No. 403,925

1`Claim.

This invention relates generally to the class of stoves and pertainsparticularly to improvements in stoves of the oil burning type which aredesigned for domestic cooking purposes.

In certain types of oil burning cooking stoves there are employed wickswhich are enclosed within chimneys and are supported to be raised andlowered for controlling the burning of the wick vand consequently thetemperature of the cooking flame. At the present time the wicks arecontrolled by various types of devices involving toothed units and levermechanisms whereby the wick may be raised and lowered as desired withrespect to the level of the fuel oil in the holder in which the wick islocated, and with these controls there are used slip joints in thefuelpipes which include packing nuts, which may be so loose as to leakor so tight as to interfere with the smooth operation of the wick.causing the same to jerk and the flame tosputter. These means ofcontrolling the wick are unsatisfactory for the reasons that they getout of order, the slip joints wear and leak, forming a fire hazard andalso because of the fact that it is necessary for the attendant of thestove to stoop down s when making adjustments.

The present invention has for its primary object to provide an improvedwick carrier or support with means associated therewith whereby theadjustment of the wick can be made easily i and quickly by a verticallyslidable carrying stem or support which may be operated by a ilexiblecable.

Another .object ofthe invention is to provide i in association with awick adjusting means of this character a flexible tubular connectionbetween the liquid fuel reservoir and the channel or moat in which thewick is mounted, whereby such channel or moat may be raised and loweredas desired to control the working level for the fuel oil with respect tothev wick, without ernploying slip-couplings which may develop leaks.

Another object of the invention is to provide in a domestic cookingstove a wick control means and carrier of improved design andconstruction, by means of which the raising and 'lowering of the wick asdesired may be accomplished easily and smoothly by the operator of thestove while standing erect infront of the same and also` whereby a lineadjustment of the wick with respect to an overlying object may beaccomplished.

The invention will be best understood from a consideration of thefollowing detailed descripf tion taken in connection with theaccompanying drawing, itbeing understood, however. that the fifiinvention is not to be considered as limited by the speciic illustrationor description but that such illustration and description constitutes apreferred embodiment of the invention.

In the drawing:

Figure 1 is a view in top plan of a four burner stove in which thepresentinvention is shown for regulating the wick and for supplying thesame with fuel oil.

Figure 2 is a vertical section taken substantially on the line 2-2 ofFigure 1.

Figure 3 is a vertical section taken ,through` the guide for thewicksupporting stem and adjacent associate parts.

Figure 4 is a sectional view on the line I-l .or Figure 3.

^ Referring now more particularly to the drawing the numeral I generallydesignates the body or frame of a stove having the end walls 2, thefront and rear walls 3 and 4 respectively and a top 5 in which is formedan opening 6 over which a receptacle may be placed to cover one` of theburners hereinafter described.

In accordance with the present invention there is provided a suitablesupport within the stove frame for one or more of the burners, suchsupport being here shown as comprising a bar I in the form of angleiron, at eachend of which is an upstanding ear 8 which is bolted orother- Wise secured to an end wall 2 so that the bar extends from oneside of the stove structure to the other'below the top 5 and within thearea defined by the edges of the opening 6.

In the present stove construction there are shown four dburner unitseach of which is indi- Acated by the character B. Each burner unitcomprises an annular receptacle indicated generally bythe numeral 9 andwhich has the spaced vertical inner and outer walls I0 and IIrespectively which are in relatively closely spaced relation and arejoined at their lower edges by the bottom I2. y i n The central portionofthe annular receptacle 9 is closed by the dish-like horizontal wall i3which is joined at its periphery to the top edge cross-section andhaving the back wall extended downwardy a substantial distance to formthe tail-piece I'I. The front wall of the guide I6 is provided with alongitudinal slot I8 for the purpose hereinafter stated.

Secured to the center of the under side of each wall I3 is a supportingstem I9 which extends into the guide IG and has a close sliding ttherein.

Secured to the face of the tail-piece II of each guide by means of a Ubolt 2|) or in any other suitable manner, is an end of tubular sheath 2|which at its other end is secured in a rigid tubular guide 22,which issecured vertically to and has its other end extending through the frontpart of the top wall 5 as shown in Figure 2. Where a number of thesesheaths 2| are employed in association with a corresponding number ofburners it is preferred that they all be grouped together at their outerends as shown in Figure 1 so that the hereinafter described flexiblewire control buttons may be easily accessible to an operator of thestove. v

Slidably disposed within the exible sheath 2I is a control wire 23which, as shown in Figure 3, has one end extended into a bore in thelower end of the stem I9 where it is removably secured by the knurledthumb-screw or bindingscrew 24, the stem of which extends through theslot I8 of the guide I6. This slot therefore limits the movement of thestem by limiting the extent to which the screw may move when the exibleactuating wire 23 is longitudinally shifted in its protecting fierdblesheath.

The opposite end of the wire, which extends through the rigid guide 22and above the top 5 of the stove, carries a button 25 as shown, by whichthe wire may be shifted as desired.

In order that the several sheaths 2I may be firmly secured againstmovement each is coupled to the front wall of the stove by a U bolt" 26.

The bottom I2 of the annular channel has secured thereto the nipplecoupling -21 to which is attached an end of a flexible liquid fuelconducting pipe 28.

Upon the back of the stove there is mounted a sump 29 or sub-tank inwhich is placed the usual removable fuel tank 30 from which the fuelruns through a suitable outlet into the sub-tank. The support for thesub-tank may comprise a pipe-line or conduit indicated generally by thenumeral 3l which is secured in any suitable manner to the back wall 4 ofthe stove and which, in a stove having aplurality of burners, may leadto a distributing manifold 32, as shown, mounted within the body of thestove. This manifold is provided with a number of outlets correspondingto the number of burners and flexible pipes for coupling the manifoldwith the burner so that each burner is separately supplied from themanifold.

The numeral 33 designates a wick winch is of circular form and which isdisposed within the annular receptacle 9 and each burner includes achimney 3&3, the lower edge of which rests in the annular gutter I5 andconsequently enclrcles the top edge of the wick.

The relative positions of the burners and the sub-tank are such that bymanipulating the control wire 23 the Wick carrying annular receptaclecan be raised so that the bottom thereof will be above the fuel level inthe sub-tank, which level is indicated by the broken line 35 andconsequently, because of the lack of oil, the

burner, if lighted, will go out. When it is desired to light a burnerthe annular receptacle 9 is lowered so that the bottom of the receptaclewill be below the fuel level 35 consequently fuel will flow from theflexible pipe into the annular receptacle to be absorbed by the Wick.

lBecause of the employment of the flexible pipe 28 and the consequentelimination of any slip joint this stove construction is leak proof andconsequently firel hazards are completely removed or reduced to aminimum.

There vare also relatively few parts to Wear land no moving parts to getout of adjustment The fuel pipes and burner are easily and quicklycleaned in case waterfor food boils over and runs down intovthe annularfuel receptacle in which the wick is placed. If this should happen it ismerely necessary to remove the chimney, take out the knurledbinding-screw 24 and lift the entire wick receptacle from the burnerunit after which it can be inverted so that Water or other material maybe poured out.

` up and down movement.

As previously stated, the construction of the present burner units issuch that if Water or other fluid boils over and gets into the annularchannel in which the wick is supported, this may be readily removed andthe channel cleaned by lifting the entire unit out of the stove, andthis work may be performed in a few minutes, whereas with other types ofburners, in order to put the device back into proper working order,hours may be required to disassemble the structure, clean the parts, andthen reassemble them.

In the description, the form and arrangement of the parts shown has beenparticularly specified, but it is to be understood that the invention lsnot to be limited either to the type of material of which the parts areconstructed, the location of the buttons 25, the shape of the guides forthe stems I9, or the form and manner of mounting the bar l upon whichthe burner units are supported. Also, any suitable location may beemployed for the fuel receptacle and sump, and any suitable means may beemployed for securing the flexible sheath ZI to the stem guide and tothe body of the stove, other than the U-bolts particularly shown anddescribed.

What is claimed is:

A liquid fuel burning stove comprising a frame structure having a top,the top having an opening therein, a bar secured horizontally within theframe beneath said opening, a vertically disposed tubular guide securedto the bar, said guide having a skirt portion extending downwardly atone side below the lower end thereof,'a stem slidably disposed withinthe guide and extending beyond the upper end thereof, a wick carriercomprising a plate portion having an annular channel thereabout for thereception of a wick, said plate portion being secured centrally to thetop of said stem to be raised and lowered thereby, a liquid fuelreceptacle, a flexible tubular fluid conductor leading fromthe lowerpart of the receptacle to the lower part of said wick channel, and meansfacilitating the raising and lowering of the stem and wick carryingchannel comprising a. tubular 4 the length of said sheath and having oneend secured in the lower end of the stem, and an actuator button securedto the other end of the Wire at the said other end of the sheathanddisposed above said top to facilitate actuation 'of the 5 wire throughthe sheath.

CHARLES A. MARTIN.

